Each SIMATIC S7-1200 CPU can be expanded with as many as three communication modules.
The RS485 and RS232 communication modules are suitable for serial, character-based point-to-point connections.
The library functions USS Drive Protocol and Modbus RTU Master and Slave Protocol are already included in the SIMATIC STEP 7 basic engineering system.
Integration of identification systems
Using the RF120C communication module all SIMATIC identification systems (RF200/300/600 and optical reader system MV400) can be connected directly to the SIMATIC S7-1200. A reader can be connected to a RF120C via the point-to-point connection. The RF120C also provides a library with application blocks that are very easy to handle. Configuration is carried out via the TIA Portal.
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Communication module | |
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CM 1241 Communication module |
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Order Information |
Article No. |
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9-POL. Sub D (Male), |
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CM 1241 RS232 |
6ES7 241-1AH32-0XB |
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CM 1241 RS422/485 |
6ES7 241-1CH32-0XB0 |
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CB 1241 RS485 Communication board |
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Order Information |
Article No. |
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CB 1241 RS485 Communication board, |
6ES7 241-1CH30-1XB0 |
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SIMATIC RF120C |
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Order Information |
Article No. |
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RS422, |
6GT2002-0LA00 |